Peak Controller connections lost on CTRL+Z

LMMS Version: 1.2 RC4, Win64
OS: Win10

Issue:
Deleting a clip in the song editor belonging to an instrument with a peak controller in its FX chain will unbind the peak controller connections upon undoing the deletion (ctrl+z). It also removes any custom controller names and puts the peak controller in the bottom of the controller rack, like it is a new instance, however its settings are not lost.

Steps to Reproduce:

1. Put a Peak Controller in the FX tab of an instrument
   1. Opt: Rename peak controller in controller rack
   2. Opt: Add additional controllers to rack
2. Connect the controller to something
3. Create a note clip in the song editor, verify that peak controller automates connections
4. Delete the note clip made in the previous step
5. Use the undo menu option or hit CRTL+Z

The Peak Controller will now have no active connections, will have lost any names given to it, and appears at the bottom of the controller rack. Its settings are not erased.

Start by reproducing the issue with a Peak Controller, a connected control, an optional custom name, and a deleted song-editor note clip, then undo the deletion. Trace the undo handling for clip deletion and the Peak Controller/controller rack state; done means connections, custom names, rack position, and settings remain intact after undo.